And that's all for this week. See you on Monday, when we'll look at a still-controversial 18th century murder mystery. In the meantime, here's a song that has been covered by pretty much everyone who ever stepped up to a microphone, but this is probably my favorite version:

I read the article on Napoleon's bit of Canada. I'd always wondered why that bump belonged to Louisiana; now I know it's because of the rivers' drainage. It's interesting that by 1818, latitude and longitude could be as strong borders as watersheds used to be.

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